Combination core barrel and reamer



March 23 1926.

H. E. BECKER COMBINATION CORE BARREL AND REAMER Filed March '7, 1923 1 .MMM

A TTORNEY- geolo to e'narge the diameter of. the bore sui- 80 this bein initiate Mgr. 23, 192s.

UNITED yfr-.a'lasv PATENT oFF/rca.l

HARRY E. BECKER, o" ymma, CALIFORNIA, 'AssIeNon rro EEGAN ronGE AND ENGI- NEERING. COMPANY, INC., 0F SAN PEDRO, CALIFORNIA, A CORPORATION 0F CALI- FORNIA.

communion oonE BARREL man BEAMER.

appuoa'uoa'ma umn 7; 192s. serial 1ro. 623,555.

4Tol all whom 'it may concern:

. Be it known that I, HARRY E. BECKER, a citizen of the United States of America, re-

siding at Brea, in the county of Orange and I State of California, have invented new and useful Improvements in Combination Core Barrels and Beamers, of which the following is a specification.

My invention relates to'a combination vlo core barrel and reamer, adapted to be used in the drilling of oil wells, and contemplates the provision of a tool' havinga novel form of` core, barrel, A whereby `a core may be formedI/for the purpose of determining the fri/bal formations, and at the same time ciently to admit of the introduction of a well casing. y

In the construction of core barrels, 1t has heretofore been customary to so assemble .the parts as to cause the core barrel to revolve in unison with the c ore bit and reamer. By the employment of core barrels of this type. it has been `found that diiculty' is exerienced in obtaining perfect cores, the

rictional contact between the revolving inner peripheral wall of the core bar rel and the outer peripheral wall of the core, being sufficient to break and disintegrate the core, particularly truewhen the forma-I tion is o? a crumbly nature, thus rendering it extremely. dilicult to analyze the disposi-l tion of the various formations.

It is the objectief myA present invention y to provide a'novelty core barrel construction in which the barrel will remain stationary with respect to the core, thus eliminat-v ing the -torsional strain on the core and permitting of its removal i intact from the barrel.

Another object of my invention is to pro vide a core barrel formed in segments, which may be conveniently separated, in order that the core may be removed from the same without danger of its becoming broken or disintegrated durin this operation.

The above and ot er objects of my invention will be more fully set forth inthe following specification, reference being had to the accompanying drawings, in which:

Fig. 1 is a vertical section. through a tool embodyin the features of myinvention.

Fig. 2 1s an enlarged detail vertical section through the corel barrel.

' Fi. 3 is a transverse section through the core arrel taken on the line 3-3 of Fig'.l 1. In carrying out my invention, 5 represents the reamer bit stock having the bore 6, in the lower end of which is threaded the core bit 7. To the lower end of the bit stock-6 yare secured the removable reamer cutting vblades 8, which surround the corel bit 7, the cutting edges thereof being disposed above the cutting edges of the core blt as clearly shown in Fig. 1 of the drawings. l

Threaded tothe to ofthe reamer bit stock 5 is the subbus ing 8 adapted, in turn, to be secured to the usual drill collar (not shown).

Threaded into the top of the reamer bit stock 5 is a cap member 9 which extends upwardly into the bore of subbushing 8 to protect the core barrel from the wash water.

Threaded into the top of the'core bit 7 is a core barrel bearing tube -10 which ex tends upwardly through the bore 6 of reamer bit stock 5, and into the cap member 9, said tube being provided with top and bottom ball bearings 11 and 12, in which is 'ournaled a core barrel 13, said core barrel ing held in vertical vadjustment by means of a cap member 14 threaded to its top end, and a nut 15 threaded to its lower yend.

v The core barrel is preferably formed in segmental halves, 16 andv 17, as shown, in order that when removed from the well it may be convenientlyopened for the removal of the core.l The cap 14 is provided with a valve 18 for the relief of air pressure above the core as it isy bein formed, and in order that the air may readi y escape into the well, the passages 19 are formed in the reamer bit stock 5 and communicating with the bore thereof which'in turn communicates with the core barrel when said valve is opened.

The usual wash water for the bits passes through the subbushing through the annular passage 20 formed between the same and the-cap 9, and from thence through the passage 21 and discharges adjacent the bit lades.

In o rotate in unison in the usual manner, the core progresses upwardly in the core barrel, and as the core barrel is-journaled t'o revolve independently of the bits when it comes in contact with the core,` it -will remainI stalos age.

What I claim is:

l. A rotary core drill comprising an outer tubular member having a plurality of vertically disposed reamer cutting blades secured tothe end thereof, an annular boring bit detachably secured to the lower end of the tubular member and below the reamer blades, a sectional core barrel mounted within said tubular member for relative rotation therewith, and a valved cap for said core barrel, a cap member of greater diameter than said core barrel secured to and within said tubular member, whereby to protect the core barrel from wash water during the operation of the drill, said tubular member provided witli iluid outlets leading from the hollow cap and tubular member to the exterior surface of the tubular member adjacent the boring bit and reamer blades.

2. A rotary core drill comprising a tubular member' formed in two sections, the lower of said sections being rovided with a detachable boring bit am? a plurality of reamer blades disposed thereabove, a core barrel mounted in the lower of said sections for relative rotation with said tubular member, said core barrel provided with an air relief valve, and a hollow cap member secured to said lower member and surrounding the upper end of said core barrel.

3. A rotary core drill comprisin a hollow outer member provided in its perip eral wall at the lower end with a plurality of reamer blades, a hollow core bit detachably secured to the lower end of said outer member, a core barrel bearing tube detachably secured to the hollow core bit, and a core barrel journaled in said bearing tube.

4. A rotary core drill comprising a hollow outer member provided in its peripheral wall at the lower end with a plurallty of vertically disposed reamer'blades, a hollowcore bit detachably secured to thelower end of said outer member, acore barrel bearing tube detachably secured to said hollow core bit, and a sectional core barrel mounted within the core barrel bearing tube for relative rtation therewith.

In witness that I claim the foregoing l have hereunto subscribed my name this 27 day of January, 1923.-

HARRY E. BECKER. 

